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The efficiency of air conditioners is often rated by the seasonal energy efficiency ratio (SEER), which is defined by the Air Conditioning, Heating and Refrigeration Institute in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. [61]
Air-conditioner sizes are often given as "tons" of cooling, where 1 ton of cooling equals 12,000 BTU/h (3.5 kW). 1 ton of cooling equals the amount of power that needs to be applied continuously over a 24-hour period to melt 1 ton of ice. The annual cost of electric energy consumed by an air conditioner may be calculated as follows:
The three major functions of heating, ventilation, and air conditioning are interrelated, especially with the need to provide thermal comfort and acceptable indoor air quality within reasonable installation, operation, and maintenance costs. HVAC systems can be used in both domestic and commercial environments.
In 1991, the company changed its name to "Qingdao Haier Group" and acquired Qingdao Air Conditioner Plant and Qingdao Freezer. [8] The company's name was simplified to its current name "Haier" in 1992. [8] In 1995, the company took over Qingdao Red Star Electronics Co., a washing machine manufacturer, along with five of its subsidiaries. [12]
A cost estimate is the approximation of the cost of a program, project, or operation. The cost estimate is the product of the cost estimating process. The cost estimate has a single total value and may have identifiable component values. A problem with a cost overrun can be avoided with a credible, reliable, and accurate cost estimate. A cost ...
Based on Cuban official data, Emilio Morales, a Miami consultant who has closely tracked GAESA’s dealings, estimates that hotel investments could have been as high as $24 billion between 2008 ...